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Присутствуют сообщения из эхоконференции IPV6 с датами от 31 Jul 11 14:37:00 до 03 Oct 24 21:46:09, всего сообщений: 7440
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= Сообщение: 1253 из 7440 ============================================= IPV6 =
От   : Markus Reschke                   2:240/1661         26 Feb 15 11:29:12
Кому : Nicholas Boel                                       26 Feb 15 11:29:12
Тема : Re: Help?
FGHI : area://IPV6?msgid=2:240/1661+54de3eb6
На   : area://IPV6?msgid=1:154/701+54ee5a53
= Кодировка сообщения определена как: LATIN-1 ================================
Ответ: area://IPV6?msgid=1:154/701+54efaeb9
==============================================================================
Hello Nicholas!

Feb 25 17:14 2015, Nicholas Boel wrote to Markus Reschke:

NB> $ cat /proc/sys/net/ipv6/conf/enp2s6/use_tempaddr
NB> 0

NB> So according to the above, I shouldn't have two addresses, right?

No, that means PE isn't the cause of your two addresses.

MR>> When you enable PE you'll get two addresses for each prefix. The
MR>> first one is the automatic one based on the MAC. And the second one is
MR>> the random one. There are also some timers which can be adjusted to
MR>> optimize the handling of the address changes.

NB> This is where the problem lies. I don't have PE enabled, so I
NB> shouldn't have two addresses. And you also mention that the first one
NB> is the automatic based on the MAC, whereas it seems as though my two
NB> are backwards!

I didn't relate directly to your specific addresses, it was just the explanation of PE.


NB> $ ifconfig
NB> enp2s6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
NB>         inet 192.168.1.100  netmask 255.255.255.0  broadcast
NB> 192.168.1.255
NB>         inet6 2001:470:1f11:1027:68d4:530a:2845:6954  prefixlen 64  
NB> scopeid 0x0<global>
NB>         inet6 2001:470:1f11:1027:207:e9ff:fe49:6711  prefixlen 64  
                                      ^     ^^ ^^

NB> scopeid 0x0<global>
NB>         inet6 fe80::207:e9ff:fe49:6711  prefixlen 64  scopeid
                         ^     ^^ ^^

This is the MAC based EUI-64. You have a fffe in the middle and the 2nd bit of the first byte is set.

Another cause for the two public addresses could be a broken configuration of SLAAC and DHCPv6.

Regards,
Markus

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* Origin: *** theca tabellaria *** (2:240/1661)

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